Shuttle mechanism for embroidering-machines.



APPLIOA'ITIOH FILED DBO.18. 1911.

Patented Feb. 2

HE NORRIS PETERS 60.. PHOTO-L!THO.. WASH'INGTON. D. C,

OFFICE.

JOSEPH A. GROEBLI, OF NEW'YOHK, N. Y.

SHUTTLE MECHANISM Specification of Letters .Patent.

FOR EMBROIDERING-MACHINES.

Patented Feb. 2', 1915.

Application filed December 18, 1911. Serial No. 666,467.

To all whom it may concern Be it known that. I, JOSEPH A. GRonBLr, acitizen of the United States, and a resident of the city, county, andState of New York, have inventedcertain new and useful Shuttle Mechanismfor Embroidering Machines, of which the following is a specification.

My invention relates to a shuttle mechanism for embroidering machines ofthe large type which employ a movable tambour frame upon which thefabric is carried. In embroidering machines of. this type the fabric isstretched upon a large tambour frame which is moved in variousdirections and extents to cause the stitching mechanism to produce thedesired design upon the fabric. Besides a. large number of needlesarranged in a plurality of rows along the machine there are usuallyprovided as many borers and as many stupfel's as needles, which, forreasons of construction are generally arranged above or below, or aboveand below the needles, and they operate to bore, the requiredperforations in the fabric as the design may require, and to smooth theedge of the apertures after the same have been provided with stitchesaround their edges. When the fabric is to be perforated, the needles arethrown out of operation, and if the boring is to take place near thepoints where the last stitches were made by the needles thefabric mustbe moved a distance substantially equal to the distance between the rowof" needles and the row of borers, "on thev one. hand, or the row ofstupfel s on the other, andthis movement isv usually greater in extentthan the movement generally reqiured during any given stitchingoperation.

As before stated", the needles are stopped before the boring-operationcommences with the needles out of the fabric; and at: the same time theshuttles are brought to a stop with their thread delivering aperturesapproximately in line with the respective needle and thread apertures inthe throat plate;

and the stopping of the needle and shuttle mechanism is usually causedby stopping the main shaft of the embroidering machine.

When the shuttles cometo a stop just preceding a boring operation theremay be slack loops in the shuttle threads between the shuttles andthroat plate caused by the descent of the shuttles from the highestposition to the position described above. This loop orsl'ack' may besufficient to permit the frame to move freely as far as may berequired}, but often it is not. Therefore, when the fabric is moved toposition it for the boring' operationas above described, it often happthreads. from the several shuttles as it is moved, and as the fabricmovement is sometimescomparatively long during this operation,considerable stress is placed upon the fabric by the shuttle threads,which is not only aptv to injure the quality of the embroidery, but: themovement of the fabric is. also liable to strain the shuttlethreads tothe point of breaking them. This is so, partly because the. pull on thethreads is not in a direct line from the shuttles but against the throatplate. Sometimes the fabric has to be moved over considerable distancesfrom one part of a design to another where no intermediate stitches aredesired or permitted. In this case the fabric makes a number ofsuccessive movements while the stitching mechanism. is inoperative.

The object of my present invention, among other things, is to relievethe strain upon the fabric by imparting preferably to the shuttlesthemselves a supplemental or secondary movement preferably every stitchperiod during the boring or stupfel operation or while only the fabricframe moves and the stitching operation is disconnected, in order to payout enough thread from each shuttle to allow he fabric to move freely sothe usual stress of drawing thread out of the shuttles, will no longercome on the fabric. During this shuttle movement the shut tles draw ontheir threads against the throat plate rather than directly against thefabric, so that the stress is not materially borne by the fabric.

To accomplish the a movement to the above objects I impart shuttlespreferably at every stitch period while the fabric frame alone operatesor while the fabric frame and the boring or stupfel mechanisms operateand I prefer to impart this movement after the embroidering machineshaft is disconnected for throwing out the needle and shut tlemechanisms. I prefer to combine my present device in such a manner withthe ordinary shuttle mechanism, that but few extra parts will berequired, thereby making the present device very simple in its application.

My invention is notnecessarily confined ens that the. fabric has to pulloutto the accomplishment of the above as mayv be used in other instanceswhere a secondary .movement is to be impartedto the shuttles while theusual shuttle movement takes place.

My invention in its operation and usefulness will be more clearlyunderstood from the detailed description hereinafter.

In the drawings forming a part of this application, Figure 1, is i ofthe shuttle mechanism of an embroidering machine, showing the embodimentof my invention in its simplest form,

Fig. 1, Fig. 3, is an elevation of the shuttle and throat plate and Fig. 4: is a detail view of the jacquard connection .for shifting thebowl to affect one of the shuttle drives.

. ,In Fig. 3, I have shownthe fabric 1, which is moved periodically withthe tambour frame in the usual manner. Parallel withthe fabric is thethroat plate 2, having an aperture 3, in line with-thepath of the needle8 and this isduplicated as toeach I point wasopposite the needle,

'ture 3, in the throat plate,

8, ready for the boring operation, there will jneedle in the customarymanner.

track in order to .formed behind the 30 1 rangernent of the sewingdevices.

last stitch preceding the sewing needle.

made at the point 7,

be nosubstantial pull on theshuttle thread so long as there is a loops),in the shuttle thread between the shuttle and throat plate 2, becausethe. fabric only has to-draw onthis loose loop. But after this freethread outside the shuttle has been used up by'the movement of thefabric frame, then thefabric must draw the thread out from the shuttleagainst the action of the shuttle tension: and as the pull of the.fabric vonthe thread is at an acute angle to the intermediate throatplate, the latter increases the resistance on the thread. As there are Ausually hundreds of shuttles in such a maably, downwardly from thein-Fig. 3, suflicient to draw out enough chine, thev stress on thefabric under such conditions may become considerable and my object is torelieve this stress.

When the ordinary shuttle mechanism isdisconnected by the stopping oftheflembroidering machine shaft leaving all the shuttles, in theposition shown in Fig. 3, I impart a movement to the 1 position shownthread for the fabric movernent. above 'set forth, and then upwardly tothe position shown in Fig. 3. This will leave a loop 9,

- only enough to increase the desired extent. As this movement of the anelevation of part throat Fig. 2, is a cross section; thereof, taken onthe .line 22 ofshuttles, prefer 'Tl16 shuttle threads may i havemore or,less of a loop before this move' v ment takes place, 'in' which casethere wlll' either be no additionalthread drawn ofl", or the existingloop to shuttle is parallel with the throat plate 2, the shuttle pullson'its thread against the plate at an angle tothe aperture 3, andtherefore the pull onthe thread exerts very little, if any, stressuponthe fabric.

As the shuttle mechanism is usually oper-. ated bythe main shaft of theembroideringmachine and such shaft is stopped when the usual shuttle andneedle movementsrare to stop I. operate my improved device froma' sourceof power which is'in "operation when the mainiembroidering machine shaftis idle and for this purpose I prefer tooperate thedevice from the shaftof the jacquard' which operates the embroidering machinep Asthe Jacquardand embroidering machine are, I both well known structures, I have shownl;

only so much thereof -asisnecessary to teach the application of minvention. A com plete acquard-maybe seen by reference to I my U. S.Patent No. 528632., .Reference will.

also be .made herein to my U. S. Patent. 593208, dated Nov. 9, 1897; vIn the drawings shaft of a the'shaft of my said Patent 528632 of No- '95Iv the shaft 10, is the jacquard and corresponds with vember 6, 1894.This is in the present show-' ing arranged at right angles to the mainem broideringmachine shaft 11. The jacquard shaft operates'atall timesthat the embroidering inachine is in operation, while the, shaft 11, isusually I stopped whenever theneedle and shuttle mechanisms are to goout This latter occurs, tempo-1 of operation. 7

rarily, when special function devices such as borers,'stupfels, and likedevices are tobe operated and as this is well understood in the art thedetails of such actions will not be set forth" herein. A disconnectingmechanism is shown in my U.

911235dated February 231909.,

Patent No. I

In Fig. 1, I have shown a plurality of '7 shuttle tracks 12, of usualconstruction,

which are disposed in an upright, oblique,

position in close proximity to each other A and shuttles 6, are arrangedto reciprocate in their individual tracks. Theshuttles are reciprocatedin their tracks by means of a i shuttle. drive bar 13,. which has theusual shuttle engaging pins 14, all of which are well understoodin theart. To a support ing bar 15, is secureda journalsocket 16, in whichreciprocates the rod 17 the latter is connected with a member 17 on thedrive bar'13, so that reciprocations may be im-''. parted to the drivethrough therod' 17. On=a suitably supported shaft18, is fulcrumed a'bell crank lever having one arm 22, ofthisang'le lever.

* tion herein referred to,

amass-z 1-aptovidediwithapin 20,. which es-in the-purposeof'reciprocating the"latter. The

operating force" is applied to the other arm.

7 I have shown an operating 'har. 23,-which is preferablyoperatedfromtthemaiu shaft 11 On the latter is arrangedg-looselyg a guidingblock24, and the bar-1'23, .has airectangular opening 25,.the' upperandl'ower edges26, 27, of which travel in. contact with the block 24',the opening being longer than the block bar 23, to bereciprocatedrelatively to the main shaft) The har23, is provided withrollers 28,- 29, arranged on suitable studs 30, and between theserollers engages acanr 31, whieh is-mountedron. the main shaft, to movetherewith. As the main shaft revolves, the 0211111331,- acting on: the.rollers 28 29, will cause rl'euiprocations. in the bar"23,r-in thedirectiori ofi itsilength', and the block-2a, supp'orts-thisendof thebar and also guides it. The. bar 23, operates the lever. 19, 22,-through a" connection which permits the special moto be imparted to theshuttle drive through the bar 17. On the end ofhar, 23, Ihaveprovided astud 32, onzwhichtfulcrumsian. arm 33,. and this latter isvfulcrumech at314, to. the arm: 22,. of the bell crankileter. I have arrangedin an ear3'5, on: the bar 23",. a; reciprocating: rod 36, the purpose ofwhich.isto engage in a slot 37, in-theren'd of the arm 33, for thepurpose of"locking the latter. When. the arm- 33,v is locked. by the bar 36, the'former is. fixedrelative to the bar 23, as shown in the drawing; inwhich case the arm can not rock on its fulcrum and in this condition theshuttle mecha nism-is; only operatedby the movement impartedthroughthebar 23, from the main. shaft. 11, which is'the movement imparted forthe. ordinary shuttle operation Orr the jacquard shaft 1.0-,I provide-acam 38, in the groove 39, of which engages v the bowl 4:0,.0'11" a leverarm. a1. Thisarm is secureduponasecond shaft: 42.. The shaft 42,corresponds with the shaftion which the-huh K- 's mounted. and. the.arm=4t1, with thearmk of my said" Patent No.- 593208, and preferablyoperates the same devices,.thati is, the

arm 76 of'my said patent disconnects the; em broidering machine shaftfrom thejacquard shaft and the-mechanism therefor: shown in my saidPatents 593208, and-1911235 is preferably employed in connection withthe present device.

InFig. 1,. I have'shown. the-pin. 66, of. the bowl 40,, arranged; tovslide in the hub 67, on the end of lever arm 441', at right. angles. tothe face of cam 38; There. isshown. an. arm 68, engaging in a'slot-70,of the pin 66, for the purpose of reciprocating the bowl, and the arm68, is to be operated in. well known. manner by a jacquard dropper, thesameas thearmk of my: said Patent. No. 593208.

to permit the @IP' the-shaft l llr'ave previded an. arm' 43',- toiwhi'ehis: ruiemmeara dependingfrod 44% Te -the latter is secured? the sleeve45, of fork 6, the-bifurcated end 47, of which straddles a pin 4:8, onone arm l9, of an angle lever; The latter is f'ulcrumed to the 23,- atthe point: 50, and} one arm. 51', thereof is fulcrumedto the locking bar36. The lowerend of the rod 44, is: connected" with. anoperatingi rod52, which it'r-is adapted to raise and lower.- The rod 52,-. has ononeendf. a cam recess-53', and on the under" sideit has are'ce'ss 5'4,for'engagement with. a locking pin 55, which is suitahlyand'station'arily supported. Inclines 56, are provided on eaclr side of"the-recess-5l. On thejacquard shaft 10,1 providea cam 57, hav--- ing aflange 58,.most of which is straight, but one portion 59, of whichvcurveslaterally. Thiscam is' -a'd'apted teoperaterthe rod 52,.byengagem'e" twiththe cam slot 53, as will be a parent: hereinafter. Oneend of the rod. 52", is fuleru'med to an arm 60, of a bell crank oranglelever, which rocks from a stationary stud 61, suitably supported.Tothe other'arm" 62, of. this lever is fulcru-med a link- 63, and thelatter is also fulcrumed} preferably" to" the stud '32, for the'purposeof rocking the-bar 23.

Operat'on During the. regular shuttle operations thepartsare-inthecondition shown in Fig. 1. That is, the bar 52, is out' of en gagementwith the cam 57, and is-heldsta-- tionary by the pin 55, which engagesinthe recess-54C: and the locking bar-36,.engages in the-recess37, ofthe arm 33'. The movement of the main embroideringmachine shaft isimparted to" the shuttle drive as follows The-cam 31, acting on therollers 28, 29-, reciprocates the bar 23', and this bar beingconnected'with the'lever 1 9, 22, causes the; latter to rock. onit'ssz'ful'crum'18'. lhe other and this latter being connected with the shuttle drivecauses the shuttles. to be reciprocated in their tracks. Thisconditioncontinues during the regular operations. of the needle and theshuttlemechanisms but when. the. stitching operations are to besuspended pending the operation of special devices, such as the borers,a change in the present mechanism occurs. a;

When the embroidering machine shaft is to be stopped through themechanism shown in my said Patent No. 911235- the bowl L0,. is. throwninto the groove of cam 38,. and the action of the cam causes the leverarm 41, to rock, and with it the shaft 42. As the arm 43, is securedtothis shaft it will he moved upwardly by the rocking of shaft. 4:2,. andin so doing it causes two actions in the subsequent elements. When the:arm 463,. and its rod 44, move upwardly the fork alSoP oes upwardlycausingthe-lever 4:9, 51,. torocked in opposition lac ' 53, straddles-The action of periodically lowered,

911235, the disconnection of shaft 11, from shaft 1.0,leaving the formeridle and the bar 23, ceases to reciprocate. Vhen the cam pocket 53, isthrown into engagement with the cam 57, the latter is in operationbecause the jacquard shaft continues to operate. cam 57, on the pocket53, will cause the rod 52, to reciprocate, which in turn will rock thelever 60, 62, and. move the connecting link movement of link 63, rocksthe left end'of bar 23, which latteizin this operation fulcrums from thesupporting block 24, turn-v 111g on the main embroidering shaft 11.v As

the arm 33, is now unlocked it is free to fulcrum from-the stud 32. If,for instance,

point 32, is moved'to the dotted position 65, then the arm 33, acting onthe lever arm 22, will cause the latter to rock onits'fulcrum 18, andassume substantially the position indicated in dotted lines. That is,the move-. ment of link 63, upwardly rocks the lever in the upwardmovement of the'link 63, the

arm-22, to the left, and the arm 19, will" consequently move downwardlyand the same movementis imparted to the shuttles. When the shuttlesmove. down, have no free thread they will draw on their respectivethreads against the friction of" the throat plate, and this willcausethread.

in the shuttles to draw out. until the downward movement of the shuttlesceases. The shuttles may have more or less free thread, but when thedraw out enough thread, if there is not already enough out, toaccomplish the purpose herein set forth.

hen the cam 57 has turned a partial revolution the bar 52, lever 60, 62,link 63,

and bar 23, will be returned again, and through thearm 33, lever 22, 19and r0 17, the shuttles will be raised to their for mer, position withtheir apertures 6*, approximately in line with the aperture 3, in thethroat plate. Therewill then be a loop 9, of free thread from eachshuttle suflicient' to permit the fabric to be moved for the boring orother operation and in moving the fabric draws off enough of the loops9, for this purpose without straining the fabric. The cam 57, continuesto reciprocate the rod 52, preferably at every stitch period so long asthe embroideringmachine shaft is disconnected; that is, so long as thearm 43, remains up. Therefore, the shuttles are so that if loops 9, have63, up and then down. The

in case they shuttles move down they will i shuttle mechanism havingneedle apertures, movable shuttles been taken up, more is' drawn offtheshuttles to allow for any-additional movement of'the fabric. When thebowrO, is againpushed into the groove of cam .38, by the device shown inmy said Patent 593208for moving the bowl of my said patent, the 7. arm43, herein will be swung back to its} first position. This will lowerthe arm 43,- and rod 44, causing the-lowering of the end of rod 52,until the cam pocket 53,disengages from thecam 57, and reengages withtheholding pin 55, when the rod 52, will-no longer reciprocate. ment of therod 414, acting through thefork. 46, rocked the lever 49, 51, back toits former. position, and caused the rod 36, to reengage and lock thearm 33. The latter will henceforth be rigid on the bar 23, and willsimply; reciprocate therewith but will not.v rock relative thereto. Theshaft 11, having been again set into motion the regular shuttlemovementswill proceed as before through The downward move-E the actionof cam31, bar 23, lever 19, 22, etc."

Thus it will be seen that when the regular shuttle movement ceases Iimparta movement to the shuttles to draw ofi' enough slack thread forthe special purposes herein set forth. Iprefer to operate. thisadditional movement from the -jacquardshaft as the latter continues tooperate. even when the regular shuttle movement ceases, but I do notwish it to be understood that I am obliged to take such operating forcedirect y from the jacquard shaft. a From the above it will be apparentthat the device is automatic and very simple, both I in construction andoperation.

I have described one form of my inven- 7 tion in detail for the purposeof fully teaching the application thereof, but'with no intion to thespecific form herein shown.

IIaving described my invention what I claim is 1. An embroideringmachine of the movtention of limiting the scope of my inven- 11c I abletambour frame typ'e,an operating shaft therefor, and shuttle mechanism,said shuttle mechanism including movable shuttles,

means operated by said operating shaft for imparting the usualoperations to the shuttles, jacquard operating means and means operatedthereby for operating the shuttles to cause the drawing out of shuttlethreads and adapted to be operated while the said] embroidering machineoperating shaft is not effecting the operation of the shuttles.

2. An embroidering machine of themov able tambour frame type, includingan oper'- ating shaft and shuttle mechanism, said comprising a throatplate tles to move themback' and forth on'each SidQ Of-dihB throat plateneedle apertures, jacquard operating means and :means oper ated by thejacquard operating means i-fpr operating the shuttlesto cause them to*be so moved as to :carry their thread apertmtes away from the threadapertures of the throat plate, :only :in ame direction, :and 31 turn,and adapted to operate 'said shuttles while the tmea-ns :for impartingthe usual operations to the shuttles is not efiecting the operation ofthe shuttles.

3. An embroidering machine of'the movable tambour frame'type includingan operating shaft therefor, and shuttle mechanism, said shuttlemechanism including movab'le' shuttles, means operated by said operatingshaft for imparting the usual operations to the shuttles, jacquardoperating means and means operated thereby for causing an additionalmovement of the shuttles for drawing out additional shuttle threads andadapted to operate the shuttles while the said embroidering machineshaft is not efi'ecting the operation of the shuttles.

l. An embroidering machine of the movable tambour frame type, includingan operating shaft and shuttle mechanism, said shuttle mechanismcomprising movable shuttles, means operated by the operating shaft forimparting the usual operations to the shuttles, jacquard operating meansand means operated by the jacquard operating means for operating theshuttles to cause the drawing out of shuttle thread and adapted to beoperated during the operation of the shuttles by the means for producingthe usual shuttle movements.

5. An embroidering machine of the 1novable tambour frame type, includinga shuttle mechanism comprising a throat plate, movable shuttles, meansoperated with the embroidering machine for imparting the usualoperations to the shuttles, jacquard operating means and means operatedby the jacquard operating means for operating the shuttles to cause thedrawing out of additional thread between the shuttles and throat plate,and adapted to be operated during the operation of the shuttles by themeans for producing the usual shuttle movements or while the latter isnot efiecting the operation of the shuttles.

6. An embroidering machine of the movable tambour frame type, includinga shuttle mechanism comprising a throat plate, movable shuttles, meansoperated with the embroidering machine for imparting the usualoperations to the shuttles, jacquard operating means and means operatedby the jacquard operating means for operating the shuttles to cause thedrawing out of additional thread between the shuttles and throat plate,and means operated by the jacquard operating means for throwing saidlatter operating means into and out of operation,

said shuttle operating means being adapted to simultaneous y f ect thepe at o o the shuttles- 7. An embroidering machine, in-cluding shuttlemechanism embodying.movable shuttles, a movable member for operating theshuttles, means operated with the embroidering machine for reciprocatingsaid movable member to impart the usual operations to the shuttles,jacquard operating means, and :means operated by the jacquard :operatingmeans for oscillating said :movable memberrto impart movement to theshuttles simultaneously with the reciprocating of the movable member. 1

8. An embroidering machine of the character described, including shuttlemechanism embodying movable shuttles, a movable member for operating theshuttles, an.

operating shaft, means operated thereby for reciprocating said movablemember to impart the usual operations to the shuttles, jacquardoperating means, means operated by the jacquard operating means foroscillating the movable member to impart movements to the shuttlessimultaneously with the movements imparted by the operating shaft, andmeans operated by the jacquard operating means for throwing said lastmentioned shuttle operating means into and out of operation.

9. An embroidering machine of the character described, including shuttlemechanism having movable shuttles, a reciprocating member operated withthe embroidering machine and arranged to operate the shuttles, a rockingmember fulcrumed to the re ciprocating member, jacquard operating meansand means operated by the jacquard operating means for oscillating saidreciprocating member through said rocking member, to operate theshuttles.

10. An embroidering machine of the class described, including a shuttlemechanism comprising movable shuttles, a reciprocating member operatedwith the embroidering machine for operating the shuttles to cause theusual shuttle operations, jacquard operating means, a rocking memberoperated by the jacquard operating means, fulcrumed to the reciprocatingmember, means operated by the jacquard operating means for locking andunlocking said rocking member, and means operated by the jacquardoperating means for operating said rocking member to operate theshuttles.

11. In an embroidering machine of the character described, shuttlemechanism includin g movable shuttles, an operating shaft, areciprocating element operated from said shaft and adapted to operatethe shuttles for the stitching operations, a rocking member fulcrumed tothe reciprocating element, power means operating while said shaft isinoperative, means operated by the said power means for oscillating thereciprocatmg element, and means for unlocking said rocking element andthrowing said means for osclllating sald reciprocatmg element intooperation.

and a lever for operating the same, an operating shaft, a movableelement fulcrumed on said'shaft, means operated by said shaft forreciprocating said movable element, a rocking member fulcrumed to saidmovable Copies 01 this patent may be obtained' tor five cents each, byaddressing the Commissioner of Pat ents. g

ment and means for simultaneously throW-.

ing said latter means into operation and unlocking said rocking member.a j

. Signed at the city, county and State of New York, this 15th day ofDecember, 1911;

Witnesses:

HENRY Eon, ADOLPH Lnmunnou'r.

Washington, D, 0.

JQSEPHAGROEBLI.

